The TL431-SOT89 is an adjustable precision shunt regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). This three-terminal device is widely used in a variety of voltage regulation and reference applications due to its precision and adjustability. The SOT-89 package is a small surface-mount package.

Applications

• Adjustable Power Supplies: Providing a stable and adjustable voltage reference.
• Voltage Monitoring: Detecting overvoltage and undervoltage conditions.
• Error Amplifiers: In feedback control systems for precise voltage regulation.
• Current Limiting Circuits: Providing accurate current limiting.
• Overvoltage Protection Circuits: Protecting sensitive circuits from excessive voltage.

Features

• Adjustable Output Voltage: Output voltage can be set to any value between Vref (typically 2.5V) and 36V.
• Low Output Noise: Provides a stable and clean voltage reference.
• High Precision: Offers accurate voltage regulation and reference.
• Low Dynamic Output Impedance: Ensures stable operation with varying load currents.
• SOT-89 Package: Small surface-mount package for space-constrained applications.

Benefits

• Flexible Voltage Regulation: Adjustable output voltage allows for use in a wide range of applications.
• Stable and Reliable Performance: Low output noise and high precision ensure stable operation.
• Simplified Circuit Design: Simple three-terminal design simplifies circuit implementation.
• Compact Design: SOT-89 package minimizes board space requirements.
• Cost-Effective Solution: Provides a cost-effective solution for voltage regulation and reference.

Additional Details

The TL431-SOT89 has a typical reference voltage of 2.5V and can operate with a cathode voltage up to 36V. It requires two external resistors to set the desired output voltage. The SOT-89 package is ideal for surface-mount applications. The TL431 is a widely used and versatile component that is suitable for many linear regulation and voltage reference circuits.